Production technique of semi-vegetable tanning cowhide pattern-marking upper leather

A production process, semi-vegetable tanning technology, applied in the field of leather processing, can solve the problems of unsatisfactory setting and maintenance effect, poor visual effect, rigid pattern, etc., and achieve the effect of unique and natural pattern, strong three-dimensional effect and enhanced setting effect

Inactive Publication Date: 2010-05-19
甘肃宏良皮业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the traditional leather production process, the embossing process does not use tannin or the amount of tannin is small, less than 5%. Put the leather directly into the

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Take the weight of shaved wet blue hide 100 kg as an example

[0015] 1. Retanning with 10 kg of white birch bark extract.

[0016] 2. Fold and squeeze the skin base that has been retanned with vegetable tanning agents in the order from the buttocks to the head and neck, keep the grain side up, and fix it on a wooden board with a height of 3 cm and a length of 40 cm. In the frame, after the leather blank is folded, the height of the part that exceeds the wooden frame is about 3 cm. The unfilled part of the wooden frame is supported by a wooden strip with a height of 3 cm and a suitable length to ensure that it is not loose and deformed. Then the leather blank and Put the wooden frame together into a flat embossing machine for embossing, the pressure is 50kg, and the pressurization time is 0 seconds, that is, it will get up immediately after pressing the leather without stopping.

[0017] 3. After pressing, the leather is taken out from the wooden frame, softened and st...

Embodiment 2

[0019] Take the weight of shaved wet blue hide 100 kg as an example

[0020] 1. Retanning with 15 kg of white birch bark extract.

[0021] 2. Fold and squeeze the skin base that has been retanned with vegetable tanning agents in the order from the buttocks to the head and neck, keep the grain side up, and fix it on a wooden board with a height of 3 cm and a length of 50 cm. In the frame, after the leather blank is folded, the height of the part that exceeds the wooden frame is about 3 cm. The unfilled part of the wooden frame is supported by a wooden strip with a height of 3 cm and a suitable length to ensure that it is not loose and deformed. Then the leather blank and Put the wooden frame together into a flat embossing machine for embossing, the pressure is 150kg, and the pressing time is 5 seconds.

[0022] 3. After pressing, the leather is taken out from the wooden frame, softened and stretched to make it unfold, and then finished by painting and finishing to produce a fi...

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PUM

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Abstract

The invention relaters to a production technique of semi-vegetable tanning cowhide pattern-marking upper leather, comprising the technical steps of: a, retanning by using a vegetable tanning agent; b, folding and extruding a leather billet to form patterns, fixing in a wooded frame, and then placing the leather billet and the wooded frame into a flat-bed marking device together for pattern marking; c, taking the leather billet out of the wooden frame after the pattern marking, unfolding through milling and toggling, and then manufacturing a cowhide upper pattern-marking leather product with stereoscopic patterns through coating and trimming. The invention firstly marks the patterns in the purpose-made wooded frame with certain height, the pattern-marking leather is higher than the wooded frame, and then the wooded frame and the pattern-marking leather are placed into the flat-bed marking machine together for the pattern marking so that the leather with the special patterns is obtained; in addition, the invention uses the natural vegetable tanning agent birch bark tanning extracts for retanning, is safe, environmental-friendly, light in color and beneficial to dyeing and has larger using amount, enhanced formed effect, protruded leather upper patterns, unique and natural patterns, strong stereoscopic impression and good visual effect.

Description

technical field [0001] The invention relates to the technical field of leather processing, in particular to a production process of semi-vegetable tanned cowhide scratched upper leather. Background technique [0002] In the traditional leather production process, the embossing process does not use tannin or the amount of tannin is small, less than 5%. Put the leather directly into the embossing machine, and press the pattern on the surface. The pattern pressed by the machine has a three-dimensional visual effect. Poor, the style is rigid and unnatural, and the setting and holding effect are not ideal. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a production process for semi-vegetable tanned cowhide scratch shoe upper leather by improving the production process to achieve the purpose of clear leather pattern, strong three-dimensional effect and good shaping effect. [0004] Technical problem of the present in...

Claims

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Application Information

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IPC IPC(8): C14B1/56C14C3/10
Inventor 尹岳涛李臣
Owner 甘肃宏良皮业股份有限公司
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